COPYING,LICENSE: add (AGPL-3.0+)

[sage.d.git] / mjo / symbol_sequence.py

diff --git a/mjo/symbol_sequence.py b/mjo/symbol_sequence.py
index 977add638b001f6956b3e8af691a51a2ebf63fec..2a104aed958d877103e1962f1ad212e2ab07c981 100644 (file)
--- a/mjo/symbol_sequence.py
+++ b/mjo/symbol_sequence.py
@@ -1,7 +1,7 @@
 from sage.all import *
 
 class SymbolSequence:
-    """
+    r"""
     An iterable object which acts like a sequence of symbolic
     expressions (variables).
 
@@ -38,13 +38,13 @@ class SymbolSequence:
     degree::
 
         sage: a = SymbolSequence('a')
-        sage: p = sum( a[i]*x^i for i in xrange(5) )
+        sage: p = sum( a[i]*x^i for i in range(5) )
         sage: p
         a_4*x^4 + a_3*x^3 + a_2*x^2 + a_1*x + a_0
 
     Using a different latex name since 'lambda' is reserved::
 
-        sage: l = SymbolSequence('l', '\lambda')
+        sage: l = SymbolSequence('l', r'\lambda')
         sage: l[0]
         l_0
         sage: latex(l[0])
@@ -57,7 +57,7 @@ class SymbolSequence:
         a_0_1_2
         sage: latex(a[0,1,2])
         a_{0}_{1}_{2}
-        sage: [ a[i,j] for i in xrange(2) for j in xrange(2) ]
+        sage: [ a[i,j] for i in range(2) for j in range(2) ]
         [a_0_0, a_0_1, a_1_0, a_1_1]
 
     You can pass slices instead of integers to obtain a list of
@@ -284,7 +284,7 @@ class SymbolSequence:
         # If the user asks for a slice, we'll be returning a list
         # of symbols.
         return [ self._subscript_integer_(idx)
-                 for idx in xrange(start, s.stop, step) ]
+                 for idx in range(start, s.stop, step) ]